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William Cullen invents the refrigerator and the freezer.
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Benjamin Franklin flew a kite with a key attached to it during a thunderstorm.
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The first self-propelled vehical was created by Nicholas-Jospeh Cugnot. It ran on steam.
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A mechanical generator was invented by Luigi Aloisio Galvani that converted mechanical energy to electrical energy.
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The first battery was created by Alessandro Volta that was made of zinc and copper.
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Three scientists named Gerald Pearson, Calvin fuller, Daryl Chapen created a solar panel with energy power of 6%
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Robert C. Webber invented the first heat pump.
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The first lightbulb was invented.
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The first Hydroelectric powerplant was opened in Appleton, Wisconsin.
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The first geothermal powerplant, created by John D, Grant in Geysers, Arkansas.
